Abstract
A pair of finitely generated, torsion-free nilpotent groups G 1, G 2 is constructed with the properties that G 1 and G 2 are p-isomorphic for all primes p, yet Aut( G 1) and Aut( G 2) are not isomorphic. The example constructed is compared to an analogous example in the homotopy category of simply connected, finite CW-complexes.
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